I have a 1984 500se and since i got it, it always made a hissing noise by the fuel pump and then after 5 to 7 min it died i cranked it again it would turn right back on, so i changed the fuel pump and fuel accumulator fuel pump relay but now with the new fuel pump i turn the car on still makes the hissing noise and dies quicker after 1 to 3 min, if someone knows about this problem
I would really appreciate the advice.


Thanks

They all make a little bit of a hissing sound. How old is the fuel filter on the car?

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record

i changed everything fuel filter fuel pump fuel acumlator and fuel pump relay but the problem persists